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<div id="overview"><a href="../../../../../../apidocs/com/googlecode/ehcache/annotations/support/TaskSchedulerAdapterFactory.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_javadoccomment"> * Copyright 2010-2011 Nicholas Blair, Eric Dalquist</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_javadoccomment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_javadoccomment"> * you may not use this file except in compliance with the License.</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_javadoccomment"> * You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_javadoccomment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> com.googlecode.ehcache.annotations.support;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> java.lang.reflect.Constructor;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.lang.reflect.InvocationTargetException;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.util.Timer;
<a class="jxr_linenumber" name="21" href="#21">21</a>  
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.slf4j.Logger;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.springframework.util.Assert;
<a class="jxr_linenumber" name="25" href="#25">25</a>  
<a class="jxr_linenumber" name="26" href="#26">26</a>  
<a class="jxr_linenumber" name="27" href="#27">27</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="28" href="#28">28</a>  <em class="jxr_javadoccomment"> * Utility for dealing with the 'fun' of supporting a class that only exists in Spring 3.0. Uses reflection to</em>
<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * determine if TaskScheduler is available and wraps it to the project-specific task scheduler api. Also supports</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * Timer use.</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * @author Eric Dalquist</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * @version $Revision: 693 $</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../com/googlecode/ehcache/annotations/support/TaskSchedulerAdapterFactory.html">TaskSchedulerAdapterFactory</a> {
<a class="jxr_linenumber" name="36" href="#36">36</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOGGER = LoggerFactory.getLogger(TaskSchedulerAdapterFactory.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="37" href="#37">37</a>      
<a class="jxr_linenumber" name="38" href="#38">38</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; TASK_SCHEDULER_CLASS ;
<a class="jxr_linenumber" name="39" href="#39">39</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; SPRING3_TASK_SCHEDULER_ADAPTOR_CLASS ;
<a class="jxr_linenumber" name="40" href="#40">40</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> Constructor&lt;?&gt; SPRING3_TASK_SCHEDULER_ADAPTOR_CONSTRUCTOR ;
<a class="jxr_linenumber" name="41" href="#41">41</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> SPRING3;
<a class="jxr_linenumber" name="42" href="#42">42</a>      
<a class="jxr_linenumber" name="43" href="#43">43</a>      <strong class="jxr_keyword">static</strong> {
<a class="jxr_linenumber" name="44" href="#44">44</a>          <em class="jxr_comment">//Use local variables so that the static class variables can be final</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>          Class&lt;?&gt; taskSchedulerClass = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="46" href="#46">46</a>          Class&lt;?&gt; spring3TaskSchedulerAdaptorClass = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="47" href="#47">47</a>          Constructor&lt;?&gt; spring3TaskSchedulerAdpatorConstructor = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="48" href="#48">48</a>          <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="49" href="#49">49</a>              taskSchedulerClass = Class.forName(<span class="jxr_string">"org.springframework.scheduling.TaskScheduler"</span>);
<a class="jxr_linenumber" name="50" href="#50">50</a>              spring3TaskSchedulerAdaptorClass = Class.forName(<span class="jxr_string">"com.googlecode.ehcache.annotations.support.Spring3TaskSchedulerAdapter"</span>);
<a class="jxr_linenumber" name="51" href="#51">51</a>              spring3TaskSchedulerAdpatorConstructor = spring3TaskSchedulerAdaptorClass.getConstructor(taskSchedulerClass);
<a class="jxr_linenumber" name="52" href="#52">52</a>              
<a class="jxr_linenumber" name="53" href="#53">53</a>              LOGGER.debug(<span class="jxr_string">"Found Spring 3.0 TaskScheduler, will use Spring3TaskSchedulerAdapter if provided with a TaskScheduler"</span>);
<a class="jxr_linenumber" name="54" href="#54">54</a>          }
<a class="jxr_linenumber" name="55" href="#55">55</a>          <strong class="jxr_keyword">catch</strong> (Exception e) {
<a class="jxr_linenumber" name="56" href="#56">56</a>              <em class="jxr_comment">//Ignore, assume we're not running in Spring 3.0</em>
<a class="jxr_linenumber" name="57" href="#57">57</a>              LOGGER.debug(<span class="jxr_string">"Could not find Spring 3.0 TaskScheduler, will use TimerTaskSchedulerAdapter if provided with a Timer"</span>);
<a class="jxr_linenumber" name="58" href="#58">58</a>          }
<a class="jxr_linenumber" name="59" href="#59">59</a>          
<a class="jxr_linenumber" name="60" href="#60">60</a>          <em class="jxr_comment">//init static class variables</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>          TASK_SCHEDULER_CLASS = taskSchedulerClass;
<a class="jxr_linenumber" name="62" href="#62">62</a>          SPRING3_TASK_SCHEDULER_ADAPTOR_CLASS = spring3TaskSchedulerAdaptorClass;
<a class="jxr_linenumber" name="63" href="#63">63</a>          SPRING3_TASK_SCHEDULER_ADAPTOR_CONSTRUCTOR = spring3TaskSchedulerAdpatorConstructor;
<a class="jxr_linenumber" name="64" href="#64">64</a>          
<a class="jxr_linenumber" name="65" href="#65">65</a>          SPRING3 = TASK_SCHEDULER_CLASS != <strong class="jxr_keyword">null</strong> &amp;&amp; 
<a class="jxr_linenumber" name="66" href="#66">66</a>              SPRING3_TASK_SCHEDULER_ADAPTOR_CLASS != <strong class="jxr_keyword">null</strong> &amp;&amp; 
<a class="jxr_linenumber" name="67" href="#67">67</a>              SPRING3_TASK_SCHEDULER_ADAPTOR_CONSTRUCTOR != <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="68" href="#68">68</a>      }
<a class="jxr_linenumber" name="69" href="#69">69</a>      
<a class="jxr_linenumber" name="70" href="#70">70</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../com/googlecode/ehcache/annotations/support/TaskSchedulerAdapter.html">TaskSchedulerAdapter</a> createTaskSchedulerAdapter(Object scheduler) {
<a class="jxr_linenumber" name="71" href="#71">71</a>          Assert.notNull(scheduler);
<a class="jxr_linenumber" name="72" href="#72">72</a>          
<a class="jxr_linenumber" name="73" href="#73">73</a>          <em class="jxr_comment">//See if the scheduler implements our adapter interface directly, if so just return it</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>          <strong class="jxr_keyword">if</strong> (scheduler instanceof TaskSchedulerAdapter) {
<a class="jxr_linenumber" name="75" href="#75">75</a>              <strong class="jxr_keyword">return</strong> (TaskSchedulerAdapter)scheduler;
<a class="jxr_linenumber" name="76" href="#76">76</a>          }
<a class="jxr_linenumber" name="77" href="#77">77</a>          
<a class="jxr_linenumber" name="78" href="#78">78</a>          <em class="jxr_comment">//Check if a Spring 3 TaskScheduler was provided and wrap it</em>
<a class="jxr_linenumber" name="79" href="#79">79</a>          <strong class="jxr_keyword">if</strong> (SPRING3 &amp;&amp; TASK_SCHEDULER_CLASS.isAssignableFrom(scheduler.getClass())) {
<a class="jxr_linenumber" name="80" href="#80">80</a>              <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="81" href="#81">81</a>                  <strong class="jxr_keyword">return</strong> (TaskSchedulerAdapter)SPRING3_TASK_SCHEDULER_ADAPTOR_CONSTRUCTOR.newInstance(scheduler);
<a class="jxr_linenumber" name="82" href="#82">82</a>              }
<a class="jxr_linenumber" name="83" href="#83">83</a>              <strong class="jxr_keyword">catch</strong> (InstantiationException e) {
<a class="jxr_linenumber" name="84" href="#84">84</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Failed to create Spring3TaskSchedulerAdapter instance by reflection to wrap "</span> + scheduler.getClass(), e);
<a class="jxr_linenumber" name="85" href="#85">85</a>              }
<a class="jxr_linenumber" name="86" href="#86">86</a>              <strong class="jxr_keyword">catch</strong> (IllegalAccessException e) {
<a class="jxr_linenumber" name="87" href="#87">87</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Failed to create Spring3TaskSchedulerAdapter instance by reflection to wrap "</span> + scheduler.getClass(), e);
<a class="jxr_linenumber" name="88" href="#88">88</a>              }
<a class="jxr_linenumber" name="89" href="#89">89</a>              <strong class="jxr_keyword">catch</strong> (InvocationTargetException e) {
<a class="jxr_linenumber" name="90" href="#90">90</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Failed to create Spring3TaskSchedulerAdapter instance by reflection to wrap "</span> + scheduler.getClass(), e);
<a class="jxr_linenumber" name="91" href="#91">91</a>              }
<a class="jxr_linenumber" name="92" href="#92">92</a>          }
<a class="jxr_linenumber" name="93" href="#93">93</a>          
<a class="jxr_linenumber" name="94" href="#94">94</a>          <em class="jxr_comment">//Check if a Timer was provided</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>          <strong class="jxr_keyword">if</strong> (scheduler instanceof Timer) {
<a class="jxr_linenumber" name="96" href="#96">96</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../com/googlecode/ehcache/annotations/support/TimerTaskSchedulerAdapter.html">TimerTaskSchedulerAdapter</a>((Timer)scheduler);
<a class="jxr_linenumber" name="97" href="#97">97</a>          }
<a class="jxr_linenumber" name="98" href="#98">98</a>          
<a class="jxr_linenumber" name="99" href="#99">99</a>          <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Provided scheduler object of type "</span> + scheduler.getClass() + <span class="jxr_string">" is not supported. Please provide a TaskScheduler, Timer or TaskSchedulerAdapter"</span>);
<a class="jxr_linenumber" name="100" href="#100">100</a>     }
<a class="jxr_linenumber" name="101" href="#101">101</a>     
<a class="jxr_linenumber" name="102" href="#102">102</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../com/googlecode/ehcache/annotations/support/TaskSchedulerAdapterFactory.html">TaskSchedulerAdapterFactory</a>() {}
<a class="jxr_linenumber" name="103" href="#103">103</a> }
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